1 /*
2  * Copyright (c) 2018 Stefan Sperling <stsp@openbsd.org>
3  *
4  * Permission to use, copy, modify, and distribute this software for any
5  * purpose with or without fee is hereby granted, provided that the above
6  * copyright notice and this permission notice appear in all copies.
7  *
8  * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
9  * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
10  * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
11  * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
12  * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
13  * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
14  * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
15  */
16 
17 struct got_zstream_buf {
18 	z_stream z;
19 	char *inbuf;
20 	size_t inlen;
21 	char *outbuf;
22 	size_t outlen;
23 	int flags;
24 #define GOT_ZSTREAM_F_HAVE_MORE 0x01
25 };
26 
27 struct got_object_id {
28 	u_int8_t sha1[SHA1_DIGEST_LENGTH];
29 };
30 
31 struct got_blob_object {
32 	FILE *f;
33 	struct got_zstream_buf zb;
34 	size_t hdrlen;
35 	struct got_object_id id;
36 };
37 
38 struct got_tree_entry {
39 	SIMPLEQ_ENTRY(got_tree_entry) entry;
40 	mode_t mode;
41 	char *name;
42 	struct got_object_id id;
43 };
44 
45 struct got_tree_object {
46 	int nentries;
47 	SIMPLEQ_HEAD(, got_tree_entry) entries;
48 };
49 
50 struct got_parent_id {
51 	SIMPLEQ_ENTRY(got_parent_id) entry;
52 	struct got_object_id id;
53 };
54 
55 SIMPLEQ_HEAD(got_parent_id_list, got_parent_id);
56 
57 struct got_commit_object {
58 	struct got_object_id tree_id;
59 	unsigned int nparents;
60 	SIMPLEQ_HEAD(, got_parent_id) parent_ids;
61 	char *author;
62 	char *committer;
63 	char *logmsg;
64 };
65 
66 struct got_object;
67 #define GOT_OBJ_TYPE_COMMIT		1
68 #define GOT_OBJ_TYPE_TREE		2
69 #define GOT_OBJ_TYPE_BLOB		3
70 #define GOT_OBJ_TYPE_TAG		4
71 /* 5 is reserved */
72 #define GOT_OBJ_TYPE_OFFSET_DELTA	6
73 #define GOT_OBJ_TYPE_REF_DELTA		7
74 
75 struct got_repository;
76 
77 char *got_object_id_str(struct got_object_id *, char *, size_t);
78 int got_object_id_cmp(struct got_object_id *, struct got_object_id *);
79 int got_object_get_type(struct got_object *);
80 const struct got_error *got_object_open(struct got_object **,
81     struct got_repository *, struct got_object_id *);
82 void got_object_close(struct got_object *);
83 const struct got_error *got_object_commit_open(struct got_commit_object **,
84     struct got_repository *, struct got_object *);
85 void got_object_commit_close(struct got_commit_object *);
86 const struct got_error *got_object_tree_open(struct got_tree_object **,
87     struct got_repository *, struct got_object *);
88 void got_object_tree_close(struct got_tree_object *);
89 const struct got_error *got_object_blob_open(struct got_blob_object **,
90     struct got_repository *, struct got_object *, size_t);
91 void got_object_blob_close(struct got_blob_object *);
92 const struct got_error *got_object_blob_read_block(struct got_blob_object *,
93     size_t *);